Table 1.
Estimated number of prevented cases, in thousands, across different vaccination delivery strategies reported by each country (2000–20)
|
Compared with no vaccination |
Compared with MCV1 alone |
|||||
|---|---|---|---|---|---|---|
| MCV1, MCV2, and SIAs | MCV1 alone | MCV1 and SIAs | MCV1 and MCV2 | MCV1, MCV2, and SIAs | ||
| MCV2 introduction before 2017 | ||||||
| India | 349 481 | 295 563 | 41 272 | 28 182 | 53 918 | |
| Indonesia | 83 082 | 61 350 | 16 176 | 9902 | 21 732 | |
| China | 321 262 | 257 140 | 32 643 | 57 289 | 64 122 | |
| Philippines | 42 549 | 29 887 | 11 448 | 3164 | 12 661 | |
| Pakistan | 76 409 | 49 163 | 26 681 | 7070 | 27 246 | |
| Angola | 15 515 | 6780 | 8651 | 433 | 8735 | |
| Ukraine | 7306 | 6090 | 102 | 1132 | 1217 | |
| Malawi | 9944 | 7003 | 2926 | 313 | 2941 | |
| MCV2 introduction during 2017–20 | ||||||
| Nigeria | 93 009 | 39 343 | 53 667 | 251 | 53 667 | |
| Ethiopia | 49 569 | 23 045 | 26 357 | 484 | 26 525 | |
| Madagascar | 12 033 | 6935 | 5087 | 25 | 5098 | |
| No MCV2 introduction until 2020 | ||||||
| Uganda | 23 922 | 15 024 | 8898 | .. | 8898 | |
| DR Congo | 40 965 | 23 429 | 17 537 | .. | 17537 | |
| Somalia | 7634 | 2931 | 4703 | .. | 4703 | |
| Total | 1 132 682 | 823 682 | 256 146 | 108 245 | 309 000 | |
Five pairs of strategies were compared with two comparator strategies to assess the health effects of additional vaccination delivery strategies as reported by each country. MCV2 effects begin in the year when WUENIC first reports MCV2 coverage (appendix p 1). Note that the strategy of MCV1, MCV2, and SIAs compared with no vaccination (represented in the first column of data) does not depict an actual historical policy implementation for vaccination strategies. Countries are presented in order of their introduction year of MCV2 and magnitude of measles burden (appendix p 1). Sums of the prevented cases in the 14 countries are presented in the last row of the table. Entries with no value correspond to options involving MCV2 in the three countries that have not yet introduced MCV2 (ie, Uganda, DR Congo, and Somalia), so prevented cases cannot be estimated. MCV1=the first routine dose of measles-containing vaccine. MCV2=the second routine dose of measles-containing vaccine. SIA=supplementary immunisation activity. WUENIC=WHO and UNICEF estimates of national immunisation coverage.